<template>
    <div class="container">
        <div class="header">
            <div class="title">用户列表</div>
            <!-- 分组选择下拉框 -->
            <el-select size="medium" filterable v-model="group_id" placeholder="请选择分组" @change="handleChange" clearable>
                <el-option v-for="(group, index) in groups" :key="index" :label="group.name"
                           :value="group.id"></el-option>
            </el-select>
        </div>
        <!-- 表格 -->
        <lin-table
                :tableColumn="tableColumn"
                :tableData="tableData"
                :operate="operate"
                @handleEdit="handleEdit"
                @handleDelete="handleDelete"
                @row-click="rowClick"
                v-loading="loading"
        ></lin-table>
        <!-- 分页 -->
        <div class="pagination">
            <el-pagination
                    @current-change="handleCurrentChange"
                    :background="true"
                    :page-size="pageCount"
                    :current-page="currentPage"
                    v-if="refreshPagination"
                    layout="prev, pager, next, jumper"
                    :total="total_nums"
            >
            </el-pagination>
        </div>
        <!-- 弹窗 -->
        <el-dialog :append-to-body="true" :before-close="handleClose" :visible.sync="dialogFormVisible">
            <div style="margin-top:-25px;">
                <el-tabs v-model="activeTab" @tab-click="handleClick">
                    <el-tab-pane label="修改信息" name="修改信息">
                        <user-info
                                ref="userInfo"
                                v-if="dialogFormVisible"
                                @handleInfoResult="handleInfoResult"
                                labelPosition="right"
                                pageType="edit"
                                :id="id"
                                :groups="groups"
                                :info="form"
                                :submit="false"
                                class="info"
                        />
                    </el-tab-pane>
                    <el-tab-pane label="修改密码" name="修改密码">
                        <user-password @handlePasswordResult="handlePasswordResult" ref="password" :id="id"
                                       class="password"/>
                    </el-tab-pane>
                </el-tabs>
            </div>
            <!-- 按键操作 -->
            <div slot="footer" class="dialog-footer">
                <el-button type="primary" @click="confirmEdit">确 定</el-button>
                <el-button @click="resetForm">重 置</el-button>
            </div>
        </el-dialog>
    </div>
</template>

<script>
    import Admin from '@/lin/models/admin'
    import LinTable from '@/components/base/table/lin-table'
    import UserInfo from './UserInfo'
    import UserPassword from './UserPassword'

    export default {
        components: {LinTable, UserInfo, UserPassword},
        inject: ['eventBus'],
        data() {
            return {
                id: 0, // 用户id
                refreshPagination: true, // 页数增加的时候，因为缓存的缘故，需要刷新Pagination组件
                editIndex: null, // 编辑的行
                total_nums: 0, // 分组内的用户总数
                currentPage: 1, // 默认获取第一页的数据
                pageCount: 10, // 每页10条数据
                tableData: [], // 表格数据
                tableColumn: [], // 表头数据
                operate: [], // 表格按键操作区
                dialogFormVisible: false, // 控制弹窗显示
                selectGroup: '', // 选中的分组Id
                groups: [], // 所有分组
                group_id: undefined,
                activeTab: '修改信息',
                form: {
                    // 表单信息
                    username: '',
                    password: '',
                    confirm_password: '',
                    email: '',
                    group_id: '',
                },
                loading: false,
            }
        },
        methods: {
            // 根据分组 刷新/获取分组内的用户
            async getAdminUsers() {
                let res
                const currentPage = this.currentPage - 1
                try {
                    this.loading = true
                    res = await Admin.getAdminUsers({group_id: this.group_id, count: this.pageCount, page: currentPage}) // eslint-disable-line
                    this.loading = false
                    this.tableData = [...res.items]
                    this.total_nums = res.total
                } catch (e) {
                    this.loading = false
                    console.log(e)
                }
            },
            // 获取所有分组
            async getAllGroups() {
                try {
                    this.loading = true
                    this.groups = await Admin.getAllGroups()
                    this.loading = false
                } catch (e) {
                    this.loading = false
                    console.log(e)
                }
            },
            // 获取所拥有的权限并渲染  由子组件提供
            async handleEdit(val) {
                this.editIndex = val.index
                let selectedData
                // 单击 编辑按键
                if (val.index >= 0) {
                    selectedData = val.row
                } else {
                    // 单击 table row
                    selectedData = val
                }
                this.id = selectedData.id
                this.form.username = selectedData.username
                this.form.email = selectedData.email
                this.form.group_id = selectedData.group_id
                this.dialogFormVisible = true
            },
            // 下拉框选择分组
            async handleChange() {
                this.currentPage = 1
                this.loading = true
                await this.getAdminUsers()
                this.loading = false
            },
            // 切换table页
            async handleCurrentChange(val) {
                this.currentPage = val
                this.loading = true
                await this.getAdminUsers('changePage')
                this.loading = false
            },
            handleDelete(val) {
                let res
                this.$confirm('此操作将删除永久该用户, 是否继续?', '提示', {
                    confirmButtonText: '确定',
                    cancelButtonText: '取消',
                    type: 'warning',
                }).then(async () => {
                    this.loading = true
                    res = await Admin.deleteOneUser(val.row.id)
                    if (res.error_code === 0) {
                        this.loading = false
                        if (this.total_nums % this.pageCount === 1 && this.currentPage !== 1) {
                            // 判断删除的是不是每一页的最后一条数据
                            this.currentPage--
                        }
                        setTimeout(() => {
                            this.getAdminUsers()
                        }, 1000)
                        this.$message({
                            type: 'success',
                            message: `${res.msg}`,
                        })
                    } else {
                        this.loading = false
                        this.$message.error(`${res.msg}`)
                    }
                }).catch((e) => {
                    this.loading = false
                    console.log(e)
                });
            },
            // 提交表单信息
            async confirmEdit() {
                if (this.activeTab === '修改信息') {
                    await this.$refs.userInfo.submitForm('form')
                } else {
                    await this.$refs.password.submitForm('form')
                }
            },
            // 重置
            resetForm() {
                if (this.activeTab === '修改信息') {
                    this.$refs.userInfo.resetForm('form')
                } else {
                    this.$refs.password.resetForm('form')
                }
            },
            // 双击 table ro
            rowClick(row) {
                this.handleEdit(row)
            },
            // 弹框 右上角 X
            handleClose(done) {
                this.dialogFormVisible = false
                done()
            },
            // 切换tab栏
            handleClick(tab) {
                console.log(tab)
                this.activeTab = tab.name
            },
            // 监听子组件更新用户信息是否成功
            async handleInfoResult(flag) {
                this.dialogFormVisible = false
                if (flag === true) {
                    this.getAdminUsers()
                }
            },
            // 监听子组件更新密码是否成功
            handlePasswordResult(result) {
                if (result === true) {
                    this.dialogFormVisible = false
                }
            },
            // 监听添加用户是否成功
            async addUser(flag) {
                if (flag === true) {
                    if (this.total_nums % this.pageCount === 0) {
                        // 判断当前页的数据是不是满了，需要增加新的页码
                        this.currentPage++
                    }
                    await this.getAdminUsers()
                    this.refreshPagination = false // 刷新pagination组件
                    this.$nextTick(() => {
                        this.refreshPagination = true
                    })
                }
            },
        },
        async created() {
            await this.getAdminUsers()
            this.getAllGroups()
            this.tableColumn = [{prop: 'username', label: '名称'}, {prop: 'group_name', label: '所属分组'}] // 设置表头信息
            this.operate = [
                {name: '编辑', func: 'handleEdit', type: 'primary'},
                {name: '删除', func: 'handleDelete', type: 'danger'},
            ]
            this.eventBus.$on('addUser', this.addUser)
        },
        beforeDestroy() {
            this.eventBus.$off('addUser', this.addUser)
        },
    }
</script>

<style lang="scss" scoped>
    .container {
        padding: 0 30px;

        .header {
            display: flex;
            justify-content: space-between;
            align-items: center;

            .title {
                height: 59px;
                line-height: 59px;
                color: $parent-title-color;
                font-size: 16px;
                font-weight: 500;
            }
        }

        .pagination {
            display: flex;
            justify-content: flex-end;
            margin: 20px;
        }
    }

    .info {
        margin-left: -55px;
        margin-bottom: -30px;
    }

    .password {
        margin-top: 20px;
        margin-left: -55px;
        margin-bottom: -20px;
    }
</style>
